Exhibit 99.1

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MONTHLY OPERATING REPORT

October 2016

I declare under penalty of perjury (28 U.S.C. Section 1746) that the information contained in this monthly operating report (including attached schedules) is true and correct to the best of my knowledge, information and belief.

Notes:

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

General Notes

Debtor-in-Possession Financial Statements - The financial statements and supplemental information contained herein are unaudited, preliminary, and may not comply with generally accepted accounting principles in the United States of America (“U.S. GAAP”) in all material respects. In addition, the financial statements and supplemental information contained herein represent the financial information for the Debtors only. The Company’s non-Debtor entities are not included in the financial statements or the supplemental information contained herein.

Financial Accounting Standards Board (“FASB”) Accounting Standards Codification 852 (“ASC 852”) addresses accounting and financial statement disclosure for entities that have filed petitions with the bankruptcy court and expect to reorganize as going concerns under chapter 11 of the bankruptcy code. ASC 852 generally does not change the manner in which financial statements are prepared. It does require, however, that the financial statements for periods subsequent to the filing of the chapter 11 petition distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of business.

The Debtors’ financial statements contained herein have been prepared in accordance with the guidance in ASC 852. The unaudited financial statements have been derived from the books and records of the Debtors. This information, however, has not been subject to procedures that would typically be applied to financial information presented in accordance with U.S. GAAP, and upon the application of such procedures, the Debtors believe that the financial information could be subject to changes, and these changes could be material. The information furnished in this report includes primarily normal recurring adjustments, but does not include all of the adjustments that would typically be made in accordance with U.S. GAAP.

The results of operations contained herein are not necessarily indicative of results that are expected from any other period or for the full year and may not necessarily reflect the combined results of operations, financial position and cash flows of the Debtors in the future.

Liabilities Subject to Compromise - As a result of the chapter 11 filing, the payment of pre-petition indebtedness is subject to compromise or other treatment under a plan of reorganization. The determination of how liabilities will ultimately be settled and treated cannot be made until the bankruptcy court approves a chapter 11 plan of reorganization. Accordingly, the ultimate amount of such liabilities is not determinable at this time. ASC 852 requires pre-petition liabilities that are subject to compromise to be reported at the amounts expected to be allowed, even if they may be settled for lesser amounts. The amounts currently classified as liabilities subject to compromise are preliminary and may be subject to future adjustments depending on bankruptcy court actions, further developments with respect to disputed claims, determinations of the secured status of certain claims, the values of any collateral securing such claims, rejection of executory contracts, continued reconciliation and other events.

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-1

Schedule of Cash Receipts and Disbursements

For the Period Petition Date (“October 24, 2016”) through October 31, 2016

(In thousands of dollars)

(Unaudited)

Notes:

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-1a

Statement with respect to Bank Account Reconciliations, Bank Statements

and Cash Disbursements Journal

For the Period Petition Date through October 31, 2016

(In thousands of dollars)

(Unaudited)

Bank Account Reconciliations & Cash Disbursement Journals

The Debtors affirm that bank reconciliations are prepared for all of their open and active bank accounts on a monthly basis. The Debtors affirm that within their financial accounting systems, check registers and/or disbursement journals are maintained for each disbursement account.

Bank Statements

The Debtors affirm that bank statements for all of their open and active bank accounts are retained by the Debtors. The Debtors affirm that none of their bank accounts were closed during the current reporting period.

Support Schedule to MOR-1 (Cash-End of Month by Debtor and Bank Account)

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-1b

Schedule of Professional Fees and Expenses Paid

For the Period Petition Date through October 31, 2016

(In thousands of dollars)

(Unaudited)

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-2

Statements of Operations¹

For the Period Petition Date through October 31, 2016

(In thousands of dollars)

(Unaudited)

Notes:

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-3a

Balance Sheets¹

As of the Petition Date

(In thousands of dollars)

(Unaudited)

Notes:

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-3a

Balance Sheets¹

As of October 31, 2016

(In thousands of dollars)

(Unaudited)

Notes:

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

Declaration Regarding the Status of Post Petition Taxes of the Debtor

October 31, 2016

J. Marshall Dodson hereby declares and states:

I am Chief Financial Officer, Senior Vice President and Treasurer of Key Energy Services, Inc., a corporation organized under the laws of the state of Maryland and a Debtor and Debtor in possession in the above-captioned chapter 11 case. In this capacity, I am familiar with the day-to-day tax operations of Key Energy Services, Inc., et al.

Except as otherwise indicated, all facts set forth in this declaration are based upon my personal knowledge of the operations and finances of Key Energy Services, Inc., information learned from my review of relevant documents, and information I have received from other members of management and/or the Debtor’s advisors. I am authorized to submit this declaration on behalf of Key Energy Services, Inc. and, if I were called upon to testify, I could and would testify competently to the facts set forth herein. I submit this declaration under penalty of perjury pursuant to 28 U.S.C. Section 1746.

To the best of my knowledge, the Debtors have filed all necessary federal, state and local tax returns and made all required post petition tax payments in connection therewith on a timely basis or have promptly remediated any late filings or payments that may have occurred due to unintentional oversights.

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-4

Summary of Unpaid Post Petition Accounts Payable and Aging¹

As of October 31, 2016

(In thousands of dollars)

(Unaudited)

Notes:

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-5

Trade Accounts Receivable and Aging

As of October 31, 2016

(In thousands of dollars)

(Unaudited)

Notes:

UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

MOR-6

Debtor Questionnaire

October 2016